Counting only motorized Plarail, Tomica World, Motor Road & Rail, Trackmaster, and Trackmaster Revolution items that are motorized, run on rails, and can move under their own power in the show, there are 82 Thomas & Friends characters available for this type of track..
If you include road, air, and water vehicles, named rolling stock, and other unmotorized rail vehicles, the count goes up to well over 120. Possibly 130. I haven't finished this list yet and probably won't
